Google Analytics
A year (or two?) after buying Urchin -- which I have personally found to be by far the best visitor measurement and behaviour analysis tool on the market -- Google has launched it's own free analytics sofware, called Google Analytics.
Having used it just for a day or two, the interface seems far poorer than Urchin's however. So perhaps they have not incorporated Urchin after all? Or perhaps they have incorporated Urchin's backend, but not its interface?
Watch this space for further observations...